Uvite and Foitite Optical Properties

Uvite

Foitite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Pale yellow colorlessAnthony et al

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.614-1.666Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

0.014-0.032Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Uvite and Foitite Optic Character

Uvite and Foitite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Uvite and Foitite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Uvite and Foitite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Uvite and Foitite Transparency

Similar to their colors, Uvite and Foitite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Uvite is Transparent while Uvite is Transparent in appearance.